Abstract: A loading structure for a valve comprises: an anti-leak pad defined onto a valve body, a metal diaphragm and a compression member both above the anti-leak pad, a loading unit having an outwardly extended loading seat, a resilient element and a driving element which is above the diaphragm, a central shaft for driving said loading unit, wherein the resilient element is located at said loading seat, the loading seat for downward or upward moving and compressing the driving element of loading unit is arranged below the resilient element, whereby when the loading unit excessively urges the diaphragm to matingly engage with the anti-leak pad, enabling the counterforce of anti-leak pad to urge the driving element of loading unit to upwardly compress the resilient element in such a manner that the shock-absorbing and anti-elastic fatigue functions can be improved, thus providing a prolonged service life for the loading structure of valve.